Imaging lens module and mobile terminal

Abstract

An imaging lens module includes an imaging lens assembly and a first optical component. The imaging lens assembly has an optical axis and includes a lens element. The lens element includes an effective optical portion, which is non-circular and disposed on a center of the lens element. The first optical component has a non-circular opening hole. The effective optical portion of the lens element of the imaging lens assembly is corresponded to the non-circular opening hole of the first optical component.

What is claimed is: 
     
       1. An imaging lens module, comprising:
 an imaging lens assembly comprising at least one lens element, wherein the lens element comprises an effective optical portion disposed on a center of the lens element; 
 a first optical component being a barrel and comprising:
 a side wall, which is closed-shape; and 
 an end wall connected to one end of the side wall and having a circular opening hole, which is a stop of the imaging lens assembly; and 
 
 at least one second optical component having a non-circular opening hole, wherein the second optical component and the imaging lens assembly are disposed in the first optical component, and the non-circular opening hole of the second optical component is corresponded to the circular opening hole of the first optical component; 
 wherein a line distance between any two points of a peripheral edge of the non-circular opening hole of the second optical component through a center of the non-circular opening hole of the second optical component is m 2AA′ , a minimum line distance between two points of the peripheral edge of the non-circular opening hole of the second optical component through the center of the non-circular opening hole of the second optical component is m 2BB′ , a maximum line distance between two points of the peripheral edge of the non-circular opening hole of the second optical component through the center of the non-circular opening hole of the second optical component is m 2CC′ , an angle between the line distance m 2AA′  of the second optical component and the minimum line distance m 2BB′  of the second optical component is  K   2AB , an angle between the maximum line distance m 2CC′  of the second optical component and the minimum line distance m 2BB′  of the second optical component is  K   2CB , and the following conditions are satisfied: 
 m 2BB′ ≦m 2AA′ <m 2CC′ ; and 
 | K   2AB   |>|K   2CB |, wherein | K   2AB | and | K   2CB | are both smaller than or equal to 90 degrees. 
 
     
     
       2. The imaging lens module of  claim 1 , wherein the lens element is made of a plastic material, the effective optical portion is non-circular, a line distance between any two points of a peripheral edge of the effective optical portion of the lens element through the center of the lens element is I AA′ , a minimum line distance between two points of the peripheral edge of the effective optical portion of the lens element through the center of the lens element is I BB′ , a maximum line distance between two points of the peripheral edge of the effective optical portion of the lens element through the center of the lens element is I CC′ , an angle between the line distance I AA′  of the lens element and the minimum line distance I BB′  of the lens element is θ AB , an angle between the maximum line distance I CC′  of the lens element and the minimum line distance I BB′  of the lens element is θ CB , and the following conditions are satisfied:
 I BB′ ≦I AA′ <I CC′ ; and 
 |θ AB |>|θ CB |, wherein |θ AB | and |θ CB | are both smaller than or equal to 90 degrees. 
 
     
     
       3. The imaging lens module of  claim 2 , wherein the maximum line distance between two points of the peripheral edge of the effective optical portion of the lens element through the center of the lens element is I CC′ , a maximum outer diameter of the lens element is Γ CC′ , and the following condition is satisfied:
 0.6<I CC′ /Γ CC′ <1. 
 
     
     
       4. The imaging lens module of  claim 3 , wherein the angle between the maximum line distance I CC′  of the lens element and the minimum line distance I BB′  of the lens element is θ CB , and the following condition is satisfied:
 50 degrees<|θ CB |<75 degrees. 
 
     
     
       5. The imaging lens module of  claim 3 , wherein the line distance between any two points of the peripheral edge of the effective optical portion of the lens element through the center of the lens element is I AA′ , the maximum line distance between two points of the peripheral edge of the effective optical portion of the lens element through the center of the lens element is I CC′ , and the following condition is satisfied:
 0.80<I AA′ /I CC′ <0.98. 
 
     
     
       6. The imaging lens module of  claim 3 , wherein the maximum line distance between two points of the peripheral edge of the effective optical portion of the lens element through the center of the lens element is I CC′ , the maximum outer diameter of the lens element is Γ CC′ , and the following condition is satisfied:
 0.8<I CC′ /Γ CC′ <0.98. 
 
     
     
       7. The imaging lens module of  claim 1 , wherein the minimum line distance between two points of the peripheral edge of the non-circular opening hole of the second optical component through the center of the non-circular opening hole of the second optical component is m 2BB′ , the maximum line distance between two points of the peripheral edge of the non-circular opening hole of the second optical component through the center of the non-circular opening hole of the second optical component is m 2CC′ , and the following condition is satisfied:
 0.50<m 2BB′ /m 2CC′ <0.95. 
 
     
     
       8. The imaging lens module of  claim 1 , wherein the second optical component further comprises:
 a side wall, which is closed-shape; and 
 two end walls, wherein each of the end walls is connected to each of two ends of the side wall separately and has the non-circular opening hole. 
 
     
     
       9. The imaging lens module of  claim 1 , wherein the second optical component is a light blocking plate with an uniform thickness. 
     
     
       10. The imaging lens module of  claim 2 , wherein the lens element is a non-circular lens element, a maximum outer diameter of the lens element is Γ CC′ , a minimum outer diameter of the lens element is Γ BB′ , a lens outer diameter of the lens element is Γ AA′ , which excludes the maximum outer diameter Γ CC′  of the lens element and the minimum outer diameter Γ BB′  of the lens element, an angle between the lens outer diameter Γ AA′  of the lens element and the minimum outer diameter Γ BB′  of the lens element is α AB , an angle between the maximum outer diameter Γ CC′  of the lens element and the minimum outer diameter Γ BB′  of the lens element is α CB , and the following conditions are satisfied:
 Γ BB′ ≦Γ AA′ <Γ CC′ ; and 
 |α AB |>|α CB |, wherein |α AB | and |α CB | are both smaller than or equal to 90 degrees. 
 
     
     
       11. The imaging lens module of  claim 10 , wherein the angle between the maximum outer diameter Γ CC′  of the lens element and the minimum outer diameter Γ BB′  of the lens element is α CB , and the following condition is satisfied:
 35 degrees<|α CB |<65 degrees. 
 
     
     
       12. The imaging lens module of  claim 10 , wherein the minimum line distance between two points of the peripheral edge of the effective optical portion of the lens element through the center of the lens element is I BB′ , the minimum outer diameter of the lens element is Γ BB′ , and the following condition is satisfied:
 0.65<I BB′ /Γ BB′ <1.0. 
 
     
     
       13. The imaging lens module of  claim 1 , further comprising:
 an image surface; 
 wherein the second optical component is closer to the image surface than the imaging lens assembly. 
 
     
     
       14. A mobile terminal, having a communication function, comprising:
 the imaging lens module of  claim 1 .